2168065009 has 8 divisors (see below), whose sum is σ = 2391737760. Its totient is φ = 1948821600.

The previous prime is 2168064971. The next prime is 2168065013. The reversal of 2168065009 is 9005608612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2168065009 - 2⁷ = 2168064881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168065049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106307 + ... + 1108264.

It is an arithmetic number, because the mean of its divisors is an integer number (298967220).

Almost surely, 2^2168065009 is an apocalyptic number.

It is an amenable number.

2168065009 is a deficient number, since it is larger than the sum of its proper divisors (223672751).

2168065009 is a wasteful number, since it uses less digits than its factorization.

2168065009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214671.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2168065009 is about 46562.4849959707. The cubic root of 2168065009 is about 1294.2676616412.

The spelling of 2168065009 in words is "two billion, one hundred sixty-eight million, sixty-five thousand, nine".